PC broke (Pixiv Fanbox)

So I got a new GPU and uninstalled the display adapters from my old gpu drive using DDU without entering windows safe mode. Now the monitor wont turn on due to the lack of a display adapter. I tried everything from removing the CMOS battery, plugging in the HDMI to motherboard and not to the gpu etc... gonna go somewhere to hopefully have it fixed, and also get this new graphics card in. I apologize in the delay of the Miku set, since my quota aim is 4 sets a month (1 set weekly) I'll get this set done as soon as my pc is cured.